A measuring device for a combined prism target ball

Abstract

The utility model relates to a kind of measuring device of combined prism target ball, involve engineering surveying technical field, including preformed part, with the support frame of preformed part rotation connection, be set in the inside target ball of support frame can rotate along the axis perpendicular to the rotation axis of support frame, and be set at the prism of the target ball ball center, channel for prism reflection is opened on the target ball, by the rotation connection of support frame and preformed part, and by the rotation of target ball along the axis perpendicular to the rotation axis of support rod, it can be guaranteed that the position of the prism set in target ball is adjusted towards any direction, when initial measurement, control measurement and three-dimensional laser scanning can be carried out simultaneously, if retest, can not re-target three-dimensional coordinate control measurement, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of engineering measurement technology, and specifically relates to a measuring device for a combined prism target ball. Background Technology

[0002] Currently, methods for measuring clearances and cross-sections include total station method and 3D laser scanning technology, with 3D laser scanning technology being more widely used. However, during the construction phase, the schedules for structural construction and track construction are closely linked. The normal workflow for clearance and cross-section measurement is as follows: 1. Conduct control surveys to determine the 3D coordinates of CPⅢ control points; 2. Use the intersection of CPⅢ control points to obtain the 3D coordinates of the total station; 3. Measure the 3D coordinates of the target using the polar coordinate method, then perform 3D laser scanning, followed by data processing. In this traditional method, the 3D coordinates of the target are measured by the total station, and the target's placement is not fixed and can be arbitrarily set up. The entire operation is time-consuming and labor-intensive, and the target's position is not fixed. Furthermore, the 3D laser technology has poor repeatability, requiring the target's 3D coordinates to be remeasured before each scan.

[0003] Therefore, it is necessary to design a measurement device for the combined prism target sphere, which can be applied to the measurement projects of CPⅢ control points (such as tunnels and linear engineering). The key technical problem that needs to be solved urgently by those skilled in the art is that the measurement does not need to be repeated during the measurement, and the control measurement and three-dimensional laser scanning can be performed simultaneously. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a measuring device for a combined prism target sphere, applicable to CPⅢ control point measurement projects (such as tunnels and linear engineering). During the initial measurement, control measurement and three-dimensional laser scanning can be performed simultaneously. For subsequent measurements, it is not necessary to re-measure the three-dimensional coordinates of the target, thus improving work efficiency.

[0005] To achieve the above objectives, this utility model provides the following solution: A measuring device for a combined prism target ball includes an embedded part, a support frame rotatably connected to the embedded part, a target ball disposed inside the support frame and rotatable along an axis perpendicular to the rotation axis of the support frame, and a prism disposed at the center of the target ball, wherein the target ball has a channel for prism reflection.

[0006] Preferably, the support frame is a semi-circular bracket, and each of the two arms of the semi-circular bracket is provided with a rotating component, which is connected to the two ends of the target ball that pass through the center of the ball.

[0007] Preferably, the rotating component includes a hemispherical protrusion disposed on the semi-circular bracket and a hemispherical groove disposed on the target ball that cooperates with the hemispherical protrusion.

[0008] Preferably, the rotating component includes a bearing disposed on the semi-circular bracket and a rotating shaft disposed on the target ball and cooperating with the bearing.

[0009] Preferably, the inner wall of the channel is provided with a paint layer to prevent the prism from reflecting light.

[0010] Preferably, the inner wall of the channel is provided with an elastic pressure ring for engaging the outer wall of the prism.

[0011] Preferably, the elastic pressure ring is either a rubber ring or a silicone ring.

[0012] Preferably, the embedded part is provided with a bolt kit, and the support frame is provided with a fixing rod that is threadedly connected to the threaded kit.

[0013] Preferably, the target ball is one of a polycarbonate ball, an aluminum alloy ball, or a ceramic ball.

[0014] Preferably, the prism is one of K9 optical glass or borosilicate optical glass.

[0015] The present invention achieves the following technical advantages over the prior art: By rotating the support frame to the embedded part and rotating the target ball along an axis perpendicular to the rotation axis of the support rod, the position of the prism set inside the target ball can be adjusted in any direction. During the initial measurement, control measurement and three-dimensional laser scanning can be performed simultaneously. If a re-measurement is required, the three-dimensional coordinates of the target do not need to be re-controlled, thus improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Appendix Figure 1 This is a schematic diagram of the overall structure of the measuring device for the combined prism target ball disclosed in this embodiment of the utility model; Among them, 1. Embedded parts; 2. Threaded fittings; 3. Fixing rods; 4. Semi-circular brackets; 5. Target balls; 6. Prisms. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this invention is to provide a measuring device for a combined prism target sphere, which can be applied to CPⅢ control point measurement projects (such as tunnels and linear engineering) without repeated control measurements, and the control measurements and three-dimensional laser scanning can be performed simultaneously.

[0020] refer to Figure 1 This utility model discloses a measuring device for a combined prism target ball, including at least an embedded part 1 pre-embedded in the tunnel sidewall. A support frame is rotatably connected to the end of the embedded part 1 away from the tunnel sidewall. The support frame can rotate along an axis perpendicular to the tunnel sidewall. A target ball 5 is installed inside the support frame, rotating along an axis perpendicular to the rotation axis of the support frame (the rotation direction of the target ball 5 is the direction of rotation around the Y-axis in the attached figure). A prism 6 for cooperation with a total station is installed at the center of the target ball 5. A channel for light reflected by the prism 6 to pass through is opened on the outer wall of the target ball 5. By rotatably connecting the support frame and the embedded part 1, and by rotating the target ball 5 along an axis perpendicular to the rotation axis of the support rod, the position of the prism 6 installed inside the target ball 5 can be adjusted in any direction. During the initial measurement, control measurement and three-dimensional laser scanning can be performed simultaneously. For re-measurement, it is not necessary to re-measure the three-dimensional coordinates of the target, thus improving work efficiency.

[0021] refer to Figure 1 In one embodiment, the support frame is a semi-circular bracket 4, with rotating parts at both ends of the semi-circular bracket 4. The rotating parts are connected to the target ball 5. By setting the rotating parts, the target ball 5 can rotate around an axis perpendicular to the rotation axis of the semi-circular bracket 4. By setting the semi-circular bracket, the obstruction of the target ball 5 can be reduced, and the recognition rate of the target ball 5 can be improved.

[0022] refer to Figure 1 In this embodiment, the rotating component includes a hemispherical protrusion disposed on the semi-circular bracket 4 and a hemispherical groove disposed on the target ball 5. The hemispherical protrusion and the hemispherical groove are rotatably engaged to realize the rotation of the target ball 5.

[0023] It should be noted that an abutment gasket can also be provided between the hemispherical protrusion and the hemispherical groove to ensure that the target ball 5 can be fixed after rotating to a certain position, thus ensuring measurement accuracy. The abutment gasket can be a silicone gasket or a rubber gasket.

[0024] refer to Figure 1 In this embodiment, the rotating component includes a bearing mounted on the semi-circular bracket 4 and a rotating shaft mounted on the target ball 5 and cooperating with the bearing, so as to realize the rotation of the target ball 5.

[0025] It should be noted that a shim can be set between the target ball 5 and the semi-circular bracket 4 to increase friction, so as to ensure that the target ball 5 can be fixed after rotating a certain angle and no longer rotate arbitrarily, thereby ensuring measurement accuracy.

[0026] refer to Figure 1 As one implementation method, the inner wall of the channel is provided with a paint layer to prevent reflection from the prism 6, which is used to absorb stray beams and avoid interfering with the measurement accuracy of the total station.

[0027] It should be noted that the coating layer is one of epoxy resin-based black matte paint, acrylic-based black matte paint, or polyurethane-based black matte paint.

[0028] refer to Figure 1 In one embodiment, an elastic pressure ring is provided on the inner wall of the channel for engaging the outer wall of the prism 6. By setting the elastic pressure ring, a slight pressure is applied to the outer wall of the prism 6 to fix the prism 6 inside the target ball 5.

[0029] refer to Figure 1 In one embodiment, the elastic pressure ring is either a rubber ring or a silicone ring.

[0030] refer to Figure 1 In one embodiment, the embedded part 1 is provided with a threaded fitting 2, the inner wall of the threaded fitting 2 is provided with threads, and the semi-circular bracket 4 is provided with a fixing rod 3 at the mating end with the embedded part 1. The fixing rod 3 is threadedly connected to the threaded fitting 2. The fixing rod 3 is rotated by threading the fixing rod 3 in the threaded fitting 2, thereby realizing the rotation of the semi-circular bracket 4.

[0031] refer to Figure 1 In one implementation, the target ball 5 is one of a polycarbonate ball, an aluminum alloy ball, or a ceramic ball.

[0032] refer to Figure 1 In one embodiment, the prism 6 is either a K9 optical glass mirror or a borosilicate optical glass mirror.

[0033] The usage process of this utility model is as follows: According to the design of the tunnel control network (such as CPIII), holes are drilled at designated locations on the tunnel sidewall, and the pre-embedded parts 1 are firmly installed in the holes. The semi-circular bracket 4, which is equipped with a target ball 5 and a prism 6, is installed on the bolt kit. A high-precision total station is set up at a distance. Using the two-degree-of-freedom rotation function of the target ball 5, the hemisphere of the prism 6 is precisely aligned with the total station. The total station is then aimed at the prism 6 for measurement. The target ball 5 is rotated so that the mirrorless hemisphere is aligned with the three-dimensional laser scanner for measurement again.

[0034] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A measuring device for a combined prism target sphere, characterized in that, It includes an embedded part, a support frame rotatably connected to the embedded part, a target ball disposed inside the support frame and rotatable along an axis perpendicular to the rotation axis of the support frame, and a prism disposed at the center of the target ball, wherein the target ball has a channel for the prism to reflect light.

2. The measuring device for the combined prism target sphere according to claim 1, characterized in that, The support frame is a semi-circular bracket, and each end of the semi-circular bracket is provided with a rotating component, which is connected to the two ends of the target ball that pass through the center of the ball.

3. The measuring device for the combined prism target sphere according to claim 2, characterized in that, The rotating component includes a hemispherical protrusion disposed on the semi-circular bracket and a hemispherical groove disposed on the target ball that cooperates with the hemispherical protrusion.

4. The measuring device for the combined prism target sphere according to claim 2, characterized in that, The rotating component includes a bearing mounted on the semi-circular bracket and a rotating shaft mounted on the target ball that cooperates with the bearing.

5. The measuring device for the combined prism target sphere according to claim 1, characterized in that, The inner wall of the channel is coated with a layer of paint to prevent the prism from reflecting light.

6. The measuring device for the combined prism target sphere according to claim 5, characterized in that, The inner wall of the channel is provided with an elastic pressure ring for engaging the outer wall of the prism.

7. The measuring device for the combined prism target sphere according to claim 6, characterized in that, The elastic pressure ring is either a rubber ring or a silicone ring.

8. The measuring device for the combined prism target sphere according to claim 1, characterized in that, The embedded part is provided with a bolt kit, and the support frame is provided with a fixing rod that is threadedly connected to the bolt kit.

9. The measuring device for the combined prism target sphere according to claim 1, characterized in that, The target ball is one of a polycarbonate ball, an aluminum alloy ball, or a ceramic ball.

10. The measuring device for the combined prism target sphere according to claim 1, characterized in that, The prism is either a K9 optical glass mirror or a borosilicate optical glass mirror.

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